Is pregnyl the same as ovidrel?

See the DrugPatentWatch profile for pregnyl

Is pregnyl the same as ovidrel?

Pregnyl and Ovidrel both supply human chorionic gonadotropin (hCG) to trigger final egg maturation and ovulation in fertility treatments. They differ in source and formulation: Pregnyl is a urinary-derived hCG product, while Ovidrel is a recombinant version produced in Chinese hamster ovary cells.

What formulation differences matter most?
Pregnyl contains 5,000 or 10,000 IU of hCG per vial and must be mixed from lyophilized powder, whereas Ovidrel is supplied as a ready-to-use 250 mcg prefilled syringe. The recombinant product carries a lower risk of viral or prion contamination because it bypasses human urine sourcing.

How do dosing and administration compare?
A typical Pregnyl dose is 5,000–10,000 IU injected intramuscularly after follicle maturation, while Ovidrel delivers the equivalent of roughly 6,500 IU as a single 250 mcg subcutaneous shot. Both are given once, 34–36 hours before egg retrieval.

Does efficacy differ?
Clinical studies show comparable oocyte yield and pregnancy rates when the labeled doses are used, yet some centers report slightly higher mature oocyte numbers with recombinant hCG. Individual response still varies with age, ovarian reserve, and stimulation protocol.

When does patent protection end for recombinant hCG?
Ovidrel’s core composition patents expired in the United States in 2014, opening the door to potential biosimilars, but no interchangeable recombinant hCG product has reached the U.S. market. Urinary products such as Pregnyl face fewer composition patents and are subject mainly to manufacturing and sourcing regulations.

Who manufactures each product?
Pregnyl is produced by Merck and marketed in the U.S. by Organon. Ovidrel is manufactured by EMD Serono. Supply disruptions of urinary hCG have occurred periodically because of donor-screening and raw-material constraints.

What do patients usually ask about switching?
Women often want to know whether switching from Pregnyl to Ovidrel mid-cycle affects timing or outcome. Most clinics view the products as interchangeable at equivalent doses, but the convenience of the prefilled syringe and the absence of reconstitution steps make Ovidrel the preferred option for many patients and nursing staff.